1. P15662: Linearly Reciprocating Friction Tester
Armature Subsystem: Reba Conway, Kolby Irving, Chris Karamanos, Eric Kutil, Emeka Okoye
Base Subsystem: Sean Cummings, Ethan Hanson, Matt Lebowitz, Tyler Nigolian, Alexandra Woodward

2. Agenda Project Overview Constraints Engineering Requirements
Customer Requirements

3. Project Overview

4. Constraints Constraint Was it met?
Conforms to ASTM G , ASTM G-181, ASTM-D , ASTM-D
$2500 budget
PASS
Use of LabVIEW for data acquisition

5. Customer Requirements
Customer Reqt #
Importance
Description
Requirement Met? C1 9
Interface between Armature (P15660) and Reciprocating Base (P15661) C2
User and repair manual included C3
System is safe to be around when running C4
All data in SI units C5
Physical size fits on desktop C6
Ease of use C7
Accommodate ball/pin contact holder C8
Contact Holder to be removable and interchangeable C9
Range of normal force applied to contact
C10
Zero resting force of armature (load release)
C11
Continuous force by voice coil
C12
Base does not deform under applied normal load
C13
Base accepts variable sized specimen
C14
Device will accommodate both dry and lubricated specimen tests
C15
Variable stroke
C16
Variable frequency
C17
Test rig must remain stationary during operation
C18 3
Data acquisition system integrates with LabVIEW
C19
Contact Holder to be easily adjustable
C20
Device reliable for long test durations
C21 1
Variety of precision weights
meets requirement
meets minimum requirement
does not meet requirement

6. Engineering Requirements (System)
Eng Reqt #
Source
Engineering Requirement (metric)
Units
Marginal Value
Ideal Value
Actual
ER1 C1
Base and armature use the same interface
PASS/FAIL
PASS
ER2 C3
System Safety
ER3
Fail Safe
ER4 C5
System not too large
feet
4x6
2x1
2x1.04x1.05
ER5
C20
Test duration
hours
0.1-10 24
ER6 C6
Base is easy to clean
seconds 60 45 46
ER7
C9, C12
Testing load range N -
0.5-20
ER8
C10
Zero Resting Force of Armature
0.01
ER9
C13
Specimen diameter mm
20-50
ER10
Specimen thickness
5-25
ER11
C11
Minimize weight of holder kg
0.5
0.25
0.285
ER12
C15
Stroke
2-10 +/- 0.5
ER13
C16
Frequency Hz
1-10 +/- 0.5
ER14 C7
Secure Ball/Pin Holder and Resist Slippage 30
>30
50.56
ER15
C1, C6, C19
Adjustablity in the Z-axis
47.22
ER16
C6, C8, C19
Ball/Pin Easily Adjustable and Interchangeable
Minutes 2
<2
0.67
ER17
C1, C6
Adjustablity in the X-axis 35
>>35 27
ER18
Adjustablity in the Y-axis 49
ER19
C4, C18
Record Frictional Force
ER20
C18
Data Acquisition works with LabView
meets requirement
meets minimum requirement
does not meet requirement

7. Project Deliverables Completed reciprocating friction tester
Complete documentation package
Drawings
Process sheets
Test plans
Test data validating conformance to requirements
Maintenance and operation manual

8. Final Product – need to label other major parts, label x + y axis
counterbalance
strain gauges
voice coil

9. Final Product - need to label major parts, label x + y axis

10. Test Results

11. Project Status

12. Major Issues